Log-boom attachment



Sept. 3, 1929. N. F. JOHNSON LOG BOOM ATTACHMENT 2 Sheets-Sheet 1 Filed Nov. 28, 1928 LI ll! INVENTOR fi'i'ed Johnson ATTORNEY Sept 3, 1929. N. F. JOHNSON 89 LO OOOOOOOOOOOOO NT Fi led Nov. 28. 1928 2 Slieets-Sheet 2 NNNNN TOR gy fled Jainism )w ATTORN EY Patented Sept. .3, 1929.

UNITED STATES 1,727,289 PATENT OFFICE. I

NILS FREDERICK JOHNSON, F SEATTLE, WASHINGTON, ASSIGNOR OF ONE-HALF TD -ALBERT YONSSON, OF BODUM ROSSON, SWEDEN,

LOG-BOOM .ATTACHMENT.

Application filed November 28, 1928. Serial No. 322,528.

This invention relates to improvements in means for forming log booms and the like.

One object of the invention is to provide means which are simple and cheap of construction, strong and durable and effective for the purpose designed, and by the use of which any boring of the logs, chopping of their ends into different formations et cetera is rendered unnecessary.

An important feature of the invention is that -due to the avoidance of any boring or chopping of the logs, a large waste of timber is avoided, as well as waste of labor, and this waste of timber, due to cutting and boring, increases in direct ratio to the scarcity of timber in any locality. For example, in Scandanavian countries where timber is relatively scarce, the penalization by the government for such boring and cutting is a considerable factor.

Another important feature of the inven tion is that in the forming of log booms the entire number of logs enclosed within the booms, as well as the logs which form the boom itself, are utilized. That is to say, a boom formed at one point to enclose a number of logs, is transported by water to a distant point where not only the logs which have been embraced in the boom, but the logs which form the border of the boom, are released, sawed, and utilized, as contrasted with the present procedure of first selecting logs for the boom itself, then boring and cutting the same and joining the ends of the logs together, transporting the boom and the logs to the point of use, releasing the logs in the boom and returning the empty boom to its destination, an obvious waste of power, time and labor.

I accomplish these and other objects of my invention by the peculiar arrangement and combination of the parts as will be more fully hereinafter described and explained in the following specification, shown in the accompanying drawings, and finally pointed out in the appended claims.

In the drawings:

Fig. 1 is a plan view of my device show ing fragments of two logs coupled together.

Fig. 2 is a sectional view taken on the line 2-2 of Fig. 1.

Fig. 3 is a section on line 3-3 of Fig. 1.

Fig. 4 is an end view of one of the logs and the device thereon looking in direction of the arrows 4-4; in Fig. 1.

Referring particularly to the drawing, numeral 1 represents a log, 2 a second log which is to be joined to the first mentioned log to form a boom. 3 indicates a plate, and pivoted thereon at 4 is a trigger 5, and pivoted at 7 is a clevis 6, there being an aperture 8 in trigger through which may be passed a pin 9 to lock the clevis and there by hold the trigger in the positionshown in Fig. 1. I

10 is a clevis pivoted at 11 to the plate 3, and to which is connected one end of a chain 12. 13 is a plate perforated at each of its ends as shown and through which links of the said chain are passed. 14 is a clevis pivoted at 15 to the plate 13. The chain 12 is passed around the log 2 until'asuitable link, dependingupon the diameter of the log, such as the link indicated at 16, is placed in a position as seen, the free end of the trigger 5 being first passed through that link by moving the. trigger 5 into its dotted position shown in Fig. 1, and afterwards the trigger 5 is moved about its center t until the clevis 6 engages it and the pin 9 is inserted to hold the clevis locked. In this way, a toggle action is set up so that the chain 12 will tightly grip the end of the log 2.

17 indicates another clevis pivoted at 18 to the plate 8. Connected to the clevis is a chain 19, which chain is passed upwardly and through the circular portion 20 of a peculiar- 1y shaped link, having an extension 21, the circular portion first passing through an aperture 22 in a member 23. The link which was passed through the circular portion 20 is then fixed out into the extension 21 into the position as clearly shown. The link just behind it forms a keeper for the remaining portion of the chain. The chain is then passed around the end of the log 1 and back through the circular portion 23 connectedto another member 24 in the same manner as the link 20. The chain is hauled up until one of the links, as that indicated at 25, is passed out into the extension 26 of the member 28, the link 27 acting as a keeper in the same manner as the link upon the other side of the log. The chain is now passed downwardly and through an aperture 28 in a member 29 having an opening 30 through which the other chain 12 was passed, the member 29 having first been moved to its dotted position as seen in Fig. 1. 31 is a trig er pivoted at 32 to the member 29 so that wh e n stress is put upon the chain 19 upwardly (Fig. l) the point of the heel of the member 29, indicatedat 33'sinks into the log and pivots around that point. 84 is a wedge shaped-plate which is passed through apertures 35 in the members 23 and 24 respectively so that by driving the wedge upwardly (Fig. l), the chain 19 is drawn more tightly around the end or" the log 1, and when driven in sufliciently,nails and the like 36 may be driven into the log through suitable apertures in the wedge shaped plate 34.

It will be understood that either the form of fastening shown in'connection with the log 2 or that form of fastening shown in connection with the log 1 may be used. That is tov say, the fastening means for the log 2 may be a counter part of the fastening means for the log 1 which includes the wedge.

hat I claim is:

1. Means for forming log booms, the com bination of a plate, a chain secured to the plate, detachable means for engaging the chain and one end of the plate, a trigger pivoted to the plate and adapted to hold the opposite end of the chain, a log engaging member having an opening through which chain secured to the plate and held in locked position by the trigger, a second chain sei cured to the plate and extended to engage a log, a'log engaging member having-openings through one of which the first mentioned chain passes, and through one of sand openings the second mentioned chain passes, and means associated'with the log engaging member to lock, said second mentioned chain.

3. Means for forming log booms, comprising a chain and a plate and devices to tighten and secure said chain and plate to a log, a second chain secured to the plate and extended therefrom to engage a second leg, an adjustable interlocking device having chain interlooks at opposite ends through which and by which the second mentioned chainis secured around a second log, and means associated with the first mentioned chain to secure the free end of the second mentioned chain.

' 4;. Means for forming log booms, comprising a chain and a plate and devices to tighten and secure said chain and plate to a log, a

second chain secured to the plate and extended therefrom to engage a second log, a pair of telescopic plates formed with openings, an eye carried by each telescopic plate, each eye having a restricted portion to receive a link of the second mentioned chain when engaging a log, a wedge extending through the openings in the telescopic plates, and means associated with the first mentioned chain to secure the free end of the second mentioned chain.

In testimony whereof I aflix my signature.

NILS FREDERICK JOHNSON. 

